Synnefo

/*

 * Copyright 2007, 2008, 2009 Electronic Business Systems Ltd.

 *

 * This file is part of GSS.

 *

 * GSS is free software: you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation, either version 3 of the License, or

 * (at your option) any later version.

 *

 * GSS is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with GSS.  If not, see <http://www.gnu.org/licenses/>.

 */

package gr.ebs.gss.client;

import gr.ebs.gss.client.commands.CopyCommand;

import gr.ebs.gss.client.commands.CutCommand;

import gr.ebs.gss.client.commands.DeleteCommand;

import gr.ebs.gss.client.commands.PasteCommand;

import gr.ebs.gss.client.commands.ToTrashCommand;

import gr.ebs.gss.client.rest.resource.FileResource;

import gr.ebs.gss.client.rest.resource.FolderResource;

import gr.ebs.gss.client.rest.resource.GroupUserResource;

import java.util.List;

import com.google.gwt.event.dom.client.ClickEvent;

import com.google.gwt.event.dom.client.ClickHandler;

import com.google.gwt.resources.client.ClientBundle;

import com.google.gwt.resources.client.ImageResource;

import com.google.gwt.user.client.Command;

import com.google.gwt.user.client.ui.AbstractImagePrototype;

import com.google.gwt.user.client.ui.MenuBar;

import com.google.gwt.user.client.ui.PopupPanel;

/**

 * The 'Edit' menu implementation.

 */

public class EditMenu extends PopupPanel implements ClickHandler {

        /**

         * The widget's images.

         */

        private final Images images;

        private final MenuBar contextMenu  = new MenuBar(true);

        /**

         * An image bundle for this widget's images.

         */

        public interface Images extends ClientBundle, FileMenu.Images, MessagePanel.Images {

                /**

                 * Will bundle the file 'editcut.png' residing in the package

                 * 'gr.ebs.gss.resources'.

                 *

                 * @return the image prototype

                 */

                @Source("gr/ebs/gss/resources/editcut.png")

                ImageResource cut();

                /**

                 * Will bundle the file 'editcopy.png' residing in the package

                 * 'gr.ebs.gss.resources'.

                 *

                 * @return the image prototype

                 */

                @Source("gr/ebs/gss/resources/editcopy.png")

                ImageResource copy();

                /**

                 * Will bundle the file 'editpaste.png' residing in the package

                 * 'gr.ebs.gss.resources'.

                 *

                 * @return the image prototype

                 */

                @Source("gr/ebs/gss/resources/editpaste.png")

                ImageResource paste();

                /**

                 * Will bundle the file 'editdelete.png' residing in the package

                 * 'gr.ebs.gss.resources'.

                 *

                 * @return the image prototype

                 */

                @Override

                @Source("gr/ebs/gss/resources/editdelete.png")

                ImageResource delete();

                /**

                 * Will bundle the file 'translate.png' residing in the package

                 * 'gr.ebs.gss.resources'.

                 *

                 * @return the image prototype

                 */

                @Source("gr/ebs/gss/resources/translate.png")

                ImageResource selectAll();

                /**

                 * Will bundle the file 'border_remove.png' residing in the package

                 * 'gr.ebs.gss.resources'.

                 *

                 * @return the image prototype

                 */

                @Source("gr/ebs/gss/resources/border_remove.png")

                ImageResource unselectAll();

        }

        /**

         * The widget's constructor.

         *

         * @param newImages the image bundle passed on by the parent object

         */

        public EditMenu(final Images newImages) {

                // The popup's constructor's argument is a boolean specifying that it

                // auto-close itself when the user clicks outside of it.

                super(true);

                setAnimationEnabled(true);

                images = newImages;

                createMenu();

                add(contextMenu);

        }

        @Override

        public void onClick(ClickEvent event) {

                final EditMenu menu = new EditMenu(images);

                final int left = event.getRelativeElement().getAbsoluteLeft();

                final int top = event.getRelativeElement().getAbsoluteTop() + event.getRelativeElement().getOffsetHeight();

                menu.setPopupPosition(left, top);

                menu.show();

        }

        public MenuBar createMenu() {

                contextMenu.clearItems();

                contextMenu.setAutoOpen(false);

                final Command selectAllCommand = new Command() {

                        @Override

                        public void execute() {

                                hide();

                                if(GSS.get().isFileListShowing())

                                        GSS.get().getFileList().selectAllRows();

                                else if(GSS.get().isSearchResultsShowing())

                                        GSS.get().getSearchResults().selectAllRows();

                        }

                };

                final Command unselectAllCommand = new Command() {

                        @Override

                        public void execute() {

                                hide();

                                if(GSS.get().isFileListShowing())

                                        GSS.get().getFileList().clearSelectedRows();

                                else if(GSS.get().isSearchResultsShowing())

                                        GSS.get().getSearchResults().clearSelectedRows();

                        }

                };

                boolean cutcopyVisible = GSS.get().getCurrentSelection() != null && (GSS.get().getCurrentSelection() instanceof FolderResource

                                        || GSS.get().getCurrentSelection() instanceof FileResource || GSS        .get().getCurrentSelection() instanceof GroupUserResource || GSS        .get().getCurrentSelection() instanceof List);

                String cutLabel = "Cut";

                String copyLabel ="Copy";

                String pasteLabel = "Paste";

                if(GSS.get().getCurrentSelection() != null)

                        if(GSS.get().getCurrentSelection() instanceof FolderResource){

                                cutLabel = "Cut Folder";

                                copyLabel = "Copy Folder";

                        }

                        else if(GSS.get().getCurrentSelection() instanceof FileResource){

                                cutLabel = "Cut File";

                                copyLabel = "Copy File";

                        }

                        else if(GSS.get().getCurrentSelection() instanceof List){

                                cutLabel = "Cut Files";

                                copyLabel = "Copy Files";

                        }

                if(GSS.get().getClipboard().getItem() != null)

                        if(GSS.get().getClipboard().getItem().getFile() != null)

                                pasteLabel = "Paste File";

                        else if(GSS.get().getClipboard().getItem().getFiles() != null)

                                pasteLabel = "Paste Files";

                        else if(GSS.get().getClipboard().getItem().getFolderResource() != null)

                                pasteLabel = "Paste Folder";

                contextMenu.addItem("<span>" + AbstractImagePrototype.create(images.cut()).getHTML() + "&nbsp;"+cutLabel+"</span>", true, new CutCommand(this)).setVisible(cutcopyVisible);

                contextMenu.addItem("<span>" + AbstractImagePrototype.create(images.copy()).getHTML() + "&nbsp;"+copyLabel+"</span>", true, new CopyCommand(this)).setVisible(cutcopyVisible);

                if (GSS.get().getClipboard().getItem() != null)

                        if(GSS.get().isUserListVisible() && GSS.get().getClipboard().getItem().getUser() == null)

                                contextMenu.addItem("<span>" + AbstractImagePrototype.create(images.paste()).getHTML() + "&nbsp;"+pasteLabel+"</span>", true, new PasteCommand(this));

                        else if(!GSS.get().isUserListVisible() && GSS.get().getClipboard().getItem().getUser() != null){

                                //do not show paste

                        }

                        else if (GSS.get().getFolders().getCurrent().getUserObject() instanceof FolderResource)

                                contextMenu.addItem("<span>" + AbstractImagePrototype.create(images.paste()).getHTML() + "&nbsp;"+pasteLabel+"</span>", true, new PasteCommand(this));

                contextMenu        .addItem("<span>" + AbstractImagePrototype.create(images.emptyTrash()).getHTML() + "&nbsp;Move to Trash</span>", true, new ToTrashCommand(this))

                                        .setVisible(cutcopyVisible);

                contextMenu        .addItem("<span>" + AbstractImagePrototype.create(images.delete()).getHTML() + "&nbsp;Delete</span>", true, new DeleteCommand(this, images))

                                        .setVisible(cutcopyVisible);

                contextMenu.addItem("<span>" + AbstractImagePrototype.create(images.selectAll()).getHTML() + "&nbsp;Select All</span>", true, selectAllCommand);

                contextMenu.addItem("<span>" + AbstractImagePrototype.create(images.unselectAll()).getHTML() + "&nbsp;Unselect All</span>", true, unselectAllCommand);

                return contextMenu;

        }

}